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Finding the Fourth Proportional to 210,775.34, 290,811.38 and 125,861.42

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Solution

The fourth proportional to 210,775.34, 290,811.38 and 125,861.42 is: 173,653.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,775.34 : 290,811.38 = 125,861.42 : x
  2. Step 2: Convert to fraction form
    210,775.34/290,811.38 = 125,861.42/x
  3. Step 3: Cross multiply
    210,775.34x = 290,811.38 × 125,861.42
  4. Step 4: Simplify right side
    210,775.34x = 36,601,933,238.96
  5. Step 5: Solve for x
    x = 36,601,933,238.96/210,775.34
  6. Step 6: Final answer
    x = 173,653.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.